Spraying system

ABSTRACT

A spraying system for use with vehicles which comprises at least two pumps in side-by-side relationship and being connected to a supply of material to be discharged, transmission means connecting said pumps operatively to the transfer case of the vehicle, the suction side of said pumps being each connected to a spray boom, there being fluid actuated means for controlling the movement of the spray boom vertically and horizontally.

United States Patent 1191 Jackson [451 Sept. 2, 1975 1 1 SPRAYING SYSTEM[21] Appl. No.: 456,233

52 us. c1. 239/167; 239/172; 239/176; 239/302; 137/344 51 Int. c1. B05B1/20; B05B 17/00 [58] Field of Search 239/146, 159-161, 239/l63-170,172, 175, 176, 302, 332, 587, 588; 137/344 [56] References Cited UNITEDSTATES PATENTS 1,495,506 5/1924 Debnam et a]. 239/164 X 1,634,701 7/1927Williams 239/167 2,590,400 3/1952 Gollnick 239/166 2,712,198 7/1955Smith 239/164 x 2,725,256 11/1955 Devost et al 239/167 2,995,307 8/1961McMahon 239/302 X 3,023,970 3/1962 Knoell 239/168 X 3,055,594 9/1962Nansel 239/166 X 3,117,725 1/1964 Palmer 239/169 X 3,231,198 l/l966Ackley et a1. 239/172 X 3,301,487 l/l967 Young 239/170 X PrimaryExaminer-Robert S. Ward, Jr. Attorney, Agent, or FirmRalph W. Kalish [57ABSTRACT A spraying system for use with vehicles which comprises atleast two pumps in side-by-side relationship and being connected to asupply of material to be discharged, transmission means connecting saidpumps operatively to the transfer case of the vehicle, the suction sideof said pumps being each connected to a spray boom, there being fluidactuated means for controlling the movement of the spray boom verticallyand horizontally.

11 Claims, 12 Drawing Figures PATENTED SEP 2191s sum 6 OF 7 FIG.9

FIG. IO

PATENTEU 2 975 seam 7 o FIG H FIG. I2

SPRAYING SYSTEM BACKGROUND ANDSUMMARY OF TI -IE INVENTION This inventionrelates to spraying systems for use with vehicles as primarily foragricultural purposes.

It is an object of the present invention to provide a spraying systemfor use with vehicles for the dispensing of liquid materials, especiallyin the field of agriculture.

It is another object of the present invention to provide a sprayingsystem of the character stated which is adapted for integration uponexisting vehicles and, therefore, obviates the need for the costlyproduction of specialized vehicles.

It is another object of the present invention to provide a sprayingsystem which may incorporate a plurality of spray booms each beingconnected to a separate pump.

It is a further object of the present invention to provide a sprayingsystem of the character stated which embodies control means for eachboom and each pump so that the said components may be independentlyoperated and adjusted.

It is a still further object of the present invention to provide aspraying system which embodies an unusual and novel boom constructionincorporating fluid actuated means for adjustable positioning of theboom, both horizontally and vertically.-

It is another object of the present invention to provide a sprayingsystem of the character stated which may be controlled from the cab ofthe vehicle so that operation of boththe vehicle and the spraying systemmay be under the control of a single individual.

It is a further object of the present invention to provide a sprayingsystem of the character stated which is economical in construction;which is extremely durable and reliable in operation, being designed forstability and resistance to breakdown; and the operation of whichassures of effective material discharge for the areas being treated.

DESCRIPTION OFTHE DRAWINGS FIG. 1 is a rear perspective view of a truckhaving mounted thereon a spraying system constructed in accordance withand embodying the present invention.

FIG. 2 is a rear perspective view of the truck but showing the left-handboom in extended condition.

FIG. 3 is an elevational view taken at the reference 3 in FIG. 1, butwith the casing closure removed.

, FIG. 4 is a top plan view taken on the line 4-4 of FIG. 3.

FIG. 5 is an enlarged elevational view of the extended boom shown inFIG. 2 and illustrating the same in lowcred condition in phantom lines.

FIG. 6 is a fragmentary horizontal transverse sectional view taken onthe line 66 of FIG. 5.

FIG. 7 is a vertical transverse sectional view taken on the line 7-7 ofFIG. 5.

FIG. 8 is a vertical transverse sectional view taken on the line 8-8 ofFIG. 6.

FIG. 9 is a vertical transverse sectional view taken on the line 99 ofFIG. 4.

FIG. 10 is a vertical transverse sectional view taken on the line 10--10of FIG. 4.

FIG. 11 is a vertical transverse sectionalview taken on the line llll ofFIG. 4. i i

FIG. 12 is a vertical transverse sectional view taken on the line 1212of FIG. 4.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now by referencecharacters to the drawings which illustrate the preferred embodiment ofthe present invention, 1 designates generally a vehicle, such as atruck, having a body 2 supported by pairs of front and rear groundWheels 3,4 and having a cab 5, and a main liquid tank 6; there beingsuitably mounted upon said vehicle rearwardly of said tank a sprayingsystem, indicated generally S. Vehicle 1 may be of the four-wheel drivetype, having a front wheel drive shaft and a rear wheel propeller shaftoperatively interconnected within a conventional transfer case (notshown) supported in the usual manner from the frame of said vehicle I.Said tank 6 thus constitutes a reservoir for the particular liquid to bedispensed by spraying system S, such as, for instance, fertilizingsolutions and the like as used for agricultural purposes.

Connected in a customary manner, such as by sprocket and chain to apower take-off of the vehicle transfer case, is a shaft 7 which extendsrearwardly under the vehicle frame for journalling within a pair ofpillow blocks 8,9 depending from spaced-apart paralleltransversecomponents 10, 11, respectively, of the base frame f of acasing c provided rearwardly of tank 6 for containing certain componentsof spraying system S to be presently described. Said casing c isprovided with a rearward hinged closure 12 to permit of ready access tothe interior of casing c. Said shaft 7 immediately rearwardly oftransverse component 10 mounts a sprocket 13 about which is engaged oneend portion of a transmission chain 14, the lower course 15 of whichextends laterally and upwardly for engagement of the other end portionof said chain 14 about a sprocket 16 carried on the end of a crankshaft17 of a crank case 18 of a pump 19 as of the two cylinder, double-actingpiston type. On the rearward face of said crank case 18 there isprovided a dial 20 whereby the length of stroke of the crankshaft may becontrolled for providing the requisite displacement of operation of pump19 in view of the power available from the transfer case. Saidtransmission chain 14 in its lower course proceeds over .a guide roller21, and. the upper course 22 of said chain 14 engages a tensioningsprocket 23 suitably mounted for vertical adjustability upon anapertured post 24 mounted upon the adjacent portion of frame f.

Mounted on shaft 7 adjacent to, but rearwardly of, sprocket 13, is acompanion drive sprocket 25, about which is engaged one end portion of adrive chain 26,

the upper course 27 of which progresses upwardly and laterallyoutwardly, toward the opposite side of vehicle 1 and engages anuppertensioning sprocket 28. Said chain 26 at its other end portionengages a sprocket 29 fixed upon a crankshaft 30 of a crank case 31 of apump 32 which is of like construction as pump 19 above described. Thelower course of drive chain 26, indicated at 27' engages a lowertensioning sprocket 28. Said tensioning sprockets 28,28 are mounted uponan arm a fixed at its lower end upon frame f and having an elongatedaperture at e within which said sprockets 28,28 are mounted foradjustment longitudinally thereof. There is a control dial 33 on therearward face of crank case 31, the operation of which permits ofcontrol of displacement of operation of pump 32.

Both of said pumps 19,32 are powered from the same source but, ifdesired, may be individually adjusted should a differential in rates ofoperation be desired. Each pump 19,32 is connected on its suction sideto an inlet conduit 34,35, respectively, which at their opposite endsare connected to main tank 6. At their discharge ends each pump 19,32 isprovided with a discharge pipe section 36,37 which is connected to afitting 38,39, respectively, which is in communication with the innerend of a short vertically extending surge suppressor and pressureequalizing chamber 40,41, respectively; the inner end of a dischargeconduit 42,43, respectively; and the inner end of an outlet conduit44,45, respectively. Said outlet conduits 44,45 at their opposite endsare connected to adapters 46,47 suitably fixed upon frame f as bymounting plates 48,49, respectively; the same being directed rearwardlyand transversely spaced-apart. Adapters 46,47 permit of connection tohosing and the like for hand operation. It will be seen that each pump19,32 also comprehends a strainer 50,51, respectively.

Carried upon shaft 7 immediately upwardly of pillow block 9 is a drivesprocket 52 about which is trained one end portion of a drive chain 53,the other end of which is engaged about a driven sprocket 54 ofrelatively reduced diameter mounted upon a jack shaft 55 which isaxially parallel to shaft 7, and the ends of which are journalled inpillow block bearings 56,57 fixed on transverse components 11 and aparallel beam 58 integrated within frame f. Engaging the upper course 59of chain 53 is a tension wheel 60 adjustably mounted on the lower end ofa arm 61 depending from a bracket 62 mounted upon transverse component11. Jack shaft 55 also mounts a drive sprocket 63 proximate pillow blockbearings 56 about which is engaged an end portion of a drive chain 64which progresses downwardly and laterally for disposition of itsopposite end portion about a driven sprocket 65 of relatively reducedcross section, said latter being carried upon the shaft 66 of anagitation pump 67 of the centrifugal type. Pump 67 is suitably suspendedby brackets, as at 68, from the underside of frame f, and with itssuction side being connected by a flexible conduit 69 to the common sump(not shown) of main tank 6. It will thus be seen that each of the pumps19,32 and 67 are connected by conduits 34, 35 and 69, respectively, tothe same tank but with there being baffles (not shown) within the tanksump for separating the volumes thereof communicating with saidconduits. The discharge side of pump 67 is connected by a flexible tube70 to one side of a T-fitting 71, the upper end of which is engaged to apipe 72 which communicates with the rearward end of a sparger line (notshown), the forward end of which is connected to a flush-out tank; therebeing the customary connections between the latter and the main tank 6.A hand operated valve 73 is provided within pipe 72 for optional openingof said pipe 72 as desired. The other side of T-fitting 71 engages acapped connector 74, the removal of which permits of suitable connectionfor transfer purposes, if desired. It will thus be seen that thetransmission for pump 67 contains a suitable gear ratio to allow for astep-up in the speed of said pump 67 as such may be required.Conversely, it will be noted that with reference to FIGS. 9 and 10, thetransmission for pumps 19 and 32 permits of relative speed reduction sothat said pumps, being preferably of the piston-reciprocating type, willbe operated for optimum efficiency. Thus with a single power source theaforesaid three pumps may be operated at preselected speeds foroperational purposes a will be described more fully hereinbelow.

As may best be seen in FIGS. 1 and 2, there is provided at each side ofcasing c, a boom assembly, as indicated at B. Since each of saidassemblies are of like construction, that disposed on the left-hand sideof FIG. 1 will be described.

Turning now to FIG. 5 it will be seen that discharge conduit 43 extendsoutwardly through a suitable opening in the casing end wall and with itsouter portion being mounted upon, in axial parallel relationship with, atubular spray boom 75. Substantially centrally of boom 75 on itsnormally upper surface there is provided a fitting 76 defininginteriorly a chamber for communication with the interior of boom 75;said fitting being adapted for detachable engagement to the outer endextremity of conduit 43 which carries a complementary fitting 77. Saidconduit is maintained against displacement by means of a bracket, asindicated at 78, which is rigid with one end of a brace arm 79, theother or outer end of which is fixed upon the upper edge of a shortplate 80 mounted upon fitting 76; there being a companion brace arm 81extending from the outer end of arm 79 to a bracket 82 secured uponspray boom 75 in proximity to its outer end extremity. Provided spacedlythroughout the extent of spray boom 75 are discharge apertures 83through which is dispensed, by spraying, liquid received from dischargeconduit 43. The outer end extremity of spray boom 75 is provided with anozzle 84 and proximate said end there is mounted a short branch pipe 85internally communicating with boom 75 and being in axially normalrelationship thereto. Said branch pipe 85 mounts a nozzle 86 at itsouter end which is adapted for usage and high volume or high gallonagespraying.

Said boom 76 at its lower or inner end is engaged to a pivot rod 87received within bearings provided in spaced-apart plates 88,88 of amounting member 89 secured, as by a bolt 90, upon a base plate 91.Secured, as by welding, at its lower end upon base plate 91, is anupstanding collar 92 for receiving the lower end portion of a verticallypresented pivot rod-93, the lower end of which projects downwardlythrough an opening in plate 91 and through an aligned opening (notshown) in an underlying support plate 94 fixed upon frame f and inplanarwise parallel relationship to plate 91. The lower extremity ofpivot rod 93 is fixedly received within a receptacle 95 depending fromplate 94. Thus, collar 92 with its associated structure, is swingableabout pivot rod 93. Mounted on plate 91 proximate collar 92 is a bolt 96for engaging the outer end of a piston 97 of a fluid cylinder 98; theopposite end of which is mounted upon plate 94. It will thus be seenthat with piston 97 in retracted or withdrawn condition, base plate 91will be swung through an angle of substantially as indicated in phantomlines in FIG. 7, and as illustrated in FIG. 2, so as to effect aswinging of boom 75 with its associated structure into operating orspraying condition. With piston 97 extended, under appropriate fluidpressure, plate 91, together with the components mounted thereon, willswing returningly through a 90 are thereby presenting boom 75 ininoperative position, adjacent to tank 6 for facilitatingtransportability as shown in FIG. 1.

Pivot rod 93 above collar 92 extends through aligned upper and lowersleeves 99,100 which are welded or otherwise rigid with adjacentportions of frame f. Disposed about pivot rod 93 immediately abovesleeve 100 is a collar 101 to which is integrally secured an outwardlyextending, relatively short arm 102 to the outer end of which ispivotally mounted, as atl03, the lower end of a fluid cylinder 104provided witha piston 105. Said piston, at its outer end, is rockablyengaged to the outer end of a connecting arm 106, the other end of whichis fixed, as at 107, to a mounting arm 108 rockably engaged, as at 109,upon theupper endof a finial 110, secured upon pivot rod 93 immediatelyabove upper sleeve 99. Said finial 110 is connected tocollar 101 by astrap 111 thereby integrating the supports for cylinder 104 and itsassociated components.

Fixed also to mounting arm 108 for extension normally upwardlytherefrom, is the lower end of a yoke 112, the upper ends of which areengaged to trunions 113 which project from opposite sides of a shortsleeve 115 whereby the latter is swingable about the axis through saidtrunions; said latter encircling a lift rod 116, the outer or normallylower end of which is angulated for loose fitting within an opening 117in plate 80. The upper or inner end of sleeve 115 bears against a stopmember 118 adjustably disposed upon lift rod 1 16, as by a set screw119. The other end of sleeve 115 bears against the upper or inner end ofa coil spring 120, the lower end of which abuts against the proximateface of a stop collar 121.

It will thus be seen that upon fluid being admitted to cylinder 104 andcausing piston 105 to be extended, yoke 112 will be moved into verticalposition and thereby effect a raising of lift rod 116 which, in turn,will pull boom 75 into raised condition, as shown in FIGS. 1,2 and 5.Conversely, upon withdraw] of fluid from cylinder 104 with consequentretraction of piston S, yoke 112 will cause lift rod 116 to be loweredand thereby, as it were, push spray boom 75 into downward or horizontalposition (as shown in phantom lines in FIG. 5) for spraying operation.Spring 120 serves to eliminate any shock being transmitted to the systemby reason of the raising and lowering of lift rod 116. i

From the foregoing it should be apparent that boom assembly B permits ofunique adjustability since by operation of cylinder 98 the location ofboom 75 within a horizontal arc may be determined and by operation ofcylinder 104 the movement of boom 75 within .alvertical arc is provided.Thus, within theparticular ranges, boom 75 may be selectedly positioned.

With reference to FIG. 8, it will be seen that a shear pin 122 extendsthrough aligned openings in the base portion of mounting member 89 andbase plate 91. Said pin is adapted to break in the event of theapplication of an accidental force of sufficient magnitude upon the boomassembly so that the boom may be free to swing about bolt 90 withoutbreaking.

Referring now to FIG. 7 it will be seen that plate 91 on its normallyinner edge is secured to the bottom edge of a vertically disposed plate123, which plate 123 is also fixed to collar 92 (see FIG. 7). Said plate123 on its opposite side is provided with a projecting ear 124 whichextends between aligned upper and lower ears 125,126, respectively, of aframe element 127 which carries a detent 128 for disposition againstsleeve 100. Said ears 124,125,126 are provided with registering openingsfor disposition therethrough of a locking bolt 129. Thus, when said bolt129 is in position, detent 128 will serve to inhibit rotation of theboom assembly B and ,therebypermit the boom to be secure in extendedposition without utilization of thefluid cylinders.

ln viewpf the foregoing, the spraying system of the present inventionconstitutes numerous unique advantages. Thus, each boom assembly may beoperated independently of the other and at different rates of flow aswell as with the spray booms in different attitudes. It will be-seenthat the entire system may be readily controlled from the cab of thevehicle by manipulation of -switches for energizing the particularcylinders of each boom assembly B for disposing the associated sprayboom in desired position, as well as for operation of pumps 19 and 32.Obviously, only a single pump and its related spray boom assembly B maybe actuated. The versatility of the present invention is indeed apparentby reason of the marked ranges of operation for both the pumps and thespray booms. The system of the present invention is also manifestlyadapted for controlled or metered material discharge so that solutionsof predetermined strength may be sprayed in the appropriateconcentration for the area being treated. By reason of the operativeconnection between pumps 19,32 with the transfer case of vehicle 1 therate of discharge can be co-ordinated with the vehicular speed.

Having described my invention, what I claim and desire to obtain byLetters Patent of the United States is:

1. For use with a vehicle having a source of supply of liquid to bedispensed and a transfer case, a spraying system comprising at least onepump mounted upon said vehicle and having a suction side and a dischargeside, means connecting said suction side to said source of supply, meansconnecting said pump to said vehicle transfer case for operation indirect response thereto, an elongated spray boom having an inner end andan outer end, said sp'ray boom atits inner end being swingably engagedupon said vehicle, first means for swinging of said spray boomwithin avertical plane comprising a lift rod having a normally outer end and aninner end, said lift rod outer end being engaged to said beam, firstfluid means mounted on said vehicle comprising a substantially verticalfluid cylinder, a piston provided in said cylinder, means interengagingsaid piston and said lift rod, second means for effecting swinging ofsaid spray boom in a horizontal plane comprising second fluid meanshaving a horizontally disposed fluid cylinder, a piston carried in saidlast mentioned cylinder, means interconnecting said piston and saidspray boom, and means connecting said discharge side of said pump withsaid spray boom.

2. For use with a vehicle, a spraying system as defined in claim 1 andfurther characterized by said means engaging said discharge side of saidpump with said spray boom being a flexible conduit for movement withsaid boom.

3. For use with a vehicle, a spraying system as defined in claim 1 andfurther characterized by said first and second fluid means beinghydraulic.

4. For use with a vehicle, a spraying system as defined in claim 1 andfurther characterized by said second means comprising a base platemounted on said vehicle in its rearward side portion for swingablemovement within a horizontal plane, said spray boom being pivotallyconnected to said base plate in its inner or normally vehicle adjacentportion, the piston of said fluid cylinder of said second fluid meansbeing connected to said base plate for effecting swinging of the sameresponsive to fluid action.

5. For use with a vehicle, a spraying system as defined in claim 4 andfurther characterized by said fluid cylinder of said second fluid meansbeing presented with its longitudinal axis extending substantiallylengthwise of the vehicle, means secured to said vehicle in its rearwardside portion fixedly mounting the aforesaid fluid cylinder.

6. For use with a vehicle having a source of supply liquid to bedispensed and a transfer case, a spraying system comprising at least onepump mounted upon said vehicle and having a suction side and a dischargeside, means connecting said suction side to said source of supply, meansconnecting said pump to said vehicle transfer case for operation indirect response thereto, an elongated spray boom having an inner end andan outer end, said spray boom at its inner end being swingably engagedupon said vehicle, first means controlling swinging of said spray boomwithin a vertical plane and comprising a lift rod having an outer endengaged to said beam in its central portion, said lift rod having aninner end, hydraulic means engaged to said lift rod in its inner endportion and comprising a vertical post, a substantially verticalhydraulic cylinder, a piston provided in said cylinder, means pivotallyengaging the lower end of said hydraulic cylinder and said post, linkagemeans engaging the piston to said lift rod proximate the inner end ofthe latter, and second means controlling swinging of said spray boom ina horizontal plane, and means engaging said discharge side of said pumpwith said spray boom.

7. For use with a vehicle having a source of supply of liquid to bedispensed and a transfer case, a spraying system comprising first andsecond pumps mounted upon said vehicle, and each having a suction sideand a discharge side, means connecting the suction side of each of saidpumps to said vehicle transfer case for operation in direct responsethereto, a first and second spray boom respectively associated with eachof said first and second pumps and being swingably mounted on saidvehicle, each spray boom being elongated and having an inner end and anouter end, each spray boom at its inner end being swingably engaged uponsaid vehicle, means connecting a discharge side of each of said firstand second pumps with the related first and second spray boom, therebeing for each of said first and second spray booms discrete first meansfor controlling swinging of same within a vertical plane and comprisinga lift rod having an outer end engaged to said beam, said lift rodhaving an inner end and fluid means comprising a substantially verticalfluid cylinder and a pisdischarge side of said ton, means interengagingsaid piston and said lift rod proximate the inner'end of the latter, andsecond discrete means provided for each of said first and second spraybooms for swinging of the same within a horizontal plane, comprisingfluid means having a substantially horizontally disposed fluidcylinder,-a piston provided in said cylinder,-and means connecting saidpiston and said spray boom,

8. For use with a vehicle, a spraying system as defined in claim 7 andfurther characterized by first and second speed control means connectedwith said first and second pumps respectively whereby the latter may beoperated at different rates.

9. For use with a vehicle, a spraying system as defined in claim 7 andfurther characterized by said fluid means being hydraulic and said firstand second pumps being of positive displacement type.

10. For use with a vehicle, a spraying system as defined in claim 7 andfurther characterized by casing means provided on the rear of saidvehicle, and said spraying system pumps being disposed within saidcasl 1. For use with a vehicle having an engine, a source of supply ofliquid to be dispensed, a front wheel drive shaft, a rear wheelpropeller shaft, and a transfer case interconnecting said drive shaftand said propeller shaft,.casing means provided at the rear of saidvehicle, an integrated spraying system provided on said vehicle andcomprising at least one pump mounted within said casing, said pumphaving a suction side and a discharge side, means connecting saidsuction side to said source of supply, means connecting said pump tosaid transfer case for operation in direct response thereto, speedcontrol means provided in said casing and connected to said pump, anelongated spray boom having an inner end and an outer end, said sprayboom at itsinner end being swingably engaged upon said vehicle in itsrearward side portion outwardly of, but adjacent to, said casing, meansfor swinging of said spray boom within a vertical plane comprising alift rod having a normally outer end and an inner end, said lift rodouter end being engaged to said beam, first fluid means mounted on saidvehicle comprising a substantially vertical fluid cylinder, a pistonprovided in said cylinder, means interengaging said piston and said liftrod, second means for effecting swinging of said spray boom in ahorizontal plane comprising second fluid means having a horizontallydisposed fluid cylinder, a piston carried in said last mentionedcylinder, means interconnecting said piston and said spray boom, andmeans connecting said pump with said spray boom.

1. For use with a vehicle having a source of supply of liquid to bedIspensed and a transfer case, a spraying system comprising at least onepump mounted upon said vehicle and having a suction side and a dischargeside, means connecting said suction side to said source of supply, meansconnecting said pump to said vehicle transfer case for operation indirect response thereto, an elongated spray boom having an inner end andan outer end, said spray boom at its inner end being swingably engagedupon said vehicle, first means for swinging of said spray boom within avertical plane comprising a lift rod having a normally outer end and aninner end, said lift rod outer end being engaged to said beam, firstfluid means mounted on said vehicle comprising a substantially verticalfluid cylinder, a piston provided in said cylinder, means interengagingsaid piston and said lift rod, second means for effecting swinging ofsaid spray boom in a horizontal plane comprising second fluid meanshaving a horizontally disposed fluid cylinder, a piston carried in saidlast mentioned cylinder, means interconnecting said piston and saidspray boom, and means connecting said discharge side of said pump withsaid spray boom.
 2. For use with a vehicle, a spraying system as definedin claim 1 and further characterized by said means engaging saiddischarge side of said pump with said spray boom being a flexibleconduit for movement with said boom.
 3. For use with a vehicle, aspraying system as defined in claim 1 and further characterized by saidfirst and second fluid means being hydraulic.
 4. For use with a vehicle,a spraying system as defined in claim 1 and further characterized bysaid second means comprising a base plate mounted on said vehicle in itsrearward side portion for swingable movement within a horizontal plane,said spray boom being pivotally connected to said base plate in itsinner or normally vehicle adjacent portion, the piston of said fluidcylinder of said second fluid means being connected to said base platefor effecting swinging of the same responsive to fluid action.
 5. Foruse with a vehicle, a spraying system as defined in claim 4 and furthercharacterized by said fluid cylinder of said second fluid means beingpresented with its longitudinal axis extending substantially lengthwiseof the vehicle, means secured to said vehicle in its rearward sideportion fixedly mounting the aforesaid fluid cylinder.
 6. For use with avehicle having a source of supply of liquid to be dispensed and atransfer case, a spraying system comprising at least one pump mountedupon said vehicle and having a suction side and a discharge side, meansconnecting said suction side to said source of supply, means connectingsaid pump to said vehicle transfer case for operation in direct responsethereto, an elongated spray boom having an inner end and an outer end,said spray boom at its inner end being swingably engaged upon saidvehicle, first means controlling swinging of said spray boom within avertical plane and comprising a lift rod having an outer end engaged tosaid beam in its central portion, said lift rod having an inner end,hydraulic means engaged to said lift rod in its inner end portion andcomprising a vertical post, a substantially vertical hydraulic cylinder,a piston provided in said cylinder, means pivotally engaging the lowerend of said hydraulic cylinder and said post, linkage means engaging thepiston to said lift rod proximate the inner end of the latter, andsecond means controlling swinging of said spray boom in a horizontalplane, and means engaging said discharge side of said pump with saidspray boom.
 7. For use with a vehicle having a source of supply ofliquid to be dispensed and a transfer case, a spraying system comprisingfirst and second pumps mounted upon said vehicle, and each having asuction side and a discharge side, means connecting the suction side ofeach of said pumps to said vehicle transfer case for operation in directresponse thereto, a first and second spray boom respectively associatedwIth each of said first and second pumps and being swingably mounted onsaid vehicle, each spray boom being elongated and having an inner endand an outer end, each spray boom at its inner end being swingablyengaged upon said vehicle, means connecting a discharge side of each ofsaid first and second pumps with the related first and second sprayboom, there being for each of said first and second spray booms discretefirst means for controlling swinging of same within a vertical plane andcomprising a lift rod having an outer end engaged to said beam, saidlift rod having an inner end and fluid means comprising a substantiallyvertical fluid cylinder and a piston, means interengaging said pistonand said lift rod proximate the inner end of the latter, and seconddiscrete means provided for each of said first and second spray boomsfor swinging of the same within a horizontal plane, comprising fluidmeans having a substantially horizontally disposed fluid cylinder, apiston provided in said cylinder, and means connecting said piston andsaid spray boom.
 8. For use with a vehicle, a spraying system as definedin claim 7 and further characterized by first and second speed controlmeans connected with said first and second pumps respectively wherebythe latter may be operated at different rates.
 9. For use with avehicle, a spraying system as defined in claim 7 and furthercharacterized by said fluid means being hydraulic and said first andsecond pumps being of positive displacement type.
 10. For use with avehicle, a spraying system as defined in claim 7 and furthercharacterized by casing means provided on the rear of said vehicle, andsaid spraying system pumps being disposed within said casing.
 11. Foruse with a vehicle having an engine, a source of supply of liquid to bedispensed, a front wheel drive shaft, a rear wheel propeller shaft, anda transfer case interconnecting said drive shaft and said propellershaft, casing means provided at the rear of said vehicle, an integratedspraying system provided on said vehicle and comprising at least onepump mounted within said casing, said pump having a suction side and adischarge side, means connecting said suction side to said source ofsupply, means connecting said pump to said transfer case for operationin direct response thereto, speed control means provided in said casingand connected to said pump, an elongated spray boom having an inner endand an outer end, said spray boom at its inner end being swingablyengaged upon said vehicle in its rearward side portion outwardly of, butadjacent to, said casing, means for swinging of said spray boom within avertical plane comprising a lift rod having a normally outer end and aninner end, said lift rod outer end being engaged to said beam, firstfluid means mounted on said vehicle comprising a substantially verticalfluid cylinder, a piston provided in said cylinder, means interengagingsaid piston and said lift rod, second means for effecting swinging ofsaid spray boom in a horizontal plane comprising second fluid meanshaving a horizontally disposed fluid cylinder, a piston carried in saidlast mentioned cylinder, means interconnecting said piston and saidspray boom, and means connecting said discharge side of said pump withsaid spray boom.